Home / 117,156,517.92-161,675,992.16-64,945,421.28

Finding the Fourth Proportional to 117,156,517.92, 161,675,992.16 and 64,945,421.28

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Solution

The fourth proportional to 117,156,517.92, 161,675,992.16 and 64,945,421.28 is: 89,624,679.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,156,517.92 : 161,675,992.16 = 64,945,421.28 : x
  2. Step 2: Convert to fraction form
    117,156,517.92/161,675,992.16 = 64,945,421.28/x
  3. Step 3: Cross multiply
    117,156,517.92x = 161,675,992.16 × 64,945,421.28
  4. Step 4: Simplify right side
    117,156,517.92x = 10,500,115,421,693,178
  5. Step 5: Solve for x
    x = 10,500,115,421,693,178/117,156,517.92
  6. Step 6: Final answer
    x = 89,624,679.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.